南京市年内二十四节气降水量分配规律研究

Analysis on annual distribution patterns oftwenty-four solar term precipitation in Nanjing City

通过对降水的研究,可以揭示气候变化规律。二十四节气是我国特有的历法,根据南京市12个雨量站的降雨资料,采用集中度与集中期、不均匀系数、年内完全调节系数及变化幅度等参数来研究计算南京市近60年来二十四节气降水量年内分配的规律。各种方法的结果比较一致,南京市年降水量主要集中在芒种、夏至、小暑3个节气,降水量集中度、年内不均匀系数、年内完全调节系数及变化幅度均有缓慢增长的趋势,年内降水分布不均。

The study of precipitation can reveal the laws of climate change.The Twenty-four solar terms is a unique calendar in China.According to the rainfall data of 12 rain measuring stations in Nanjing,the annual distribution law of the 24 solar terms in the past 60 years in Nanjing was studied and calculated by using parameters such as concentration degree,concentration period,non-uniformity coefficient,annual complete adjustment coefficient and variation amplitude.The results of various methods were relatively consistent.The annual precipitation in Nanjing was mainly concentrated in the three solar term such as grain in ear,the summer solstice,and the slight heat.The precipitation concentration degree,nonuniformity coefficient,complete adjustment coefficient and amplitude of variation were all in slow growth trend,but the precipitation distribution was uneven during the year.